20A47

Metric Roller Chain Sprocket

Item #100966921

32 mm Minimum Bore

446.05 mm Maximum Bore

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Product Details

Maximum bores shown will accommodate standard keyseat and setscrew over keyseat. Slightly larger bores are possible with no keyseat, shallow keyseat, or setscrew at an angle to keyseat.

Manufactured of high carbon steel
Precise machining and processes ensure consistent finish and high quality
Bores are concentric to pitch line, minimizing run out
Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain

Specifications

Pitch Diameter [Min]	475.4 mm
Material	Steel
Caliper Diameter	456.04 mm
Series	A
Root Diameter	456.3 mm
Chain Pitch	31.75 mm
Pitch Root Diameter	456.3 mm
Martin No.	20A47
Family Name	No. 20 - 31.750 mm Pitch - Single - A
Sprocket Style	A
Chain No.	20B, 20B-1
Hub Length Thru	N/A
Bore Range [Min]	32 mm
Inch/Metric	Metric
Bore Type	Reborable
Bore Range [Max]	446.05 mm
Outside Dia. [Min]	495.99 mm
Width Across Teeth	18.59 mm
Hub Projection	N/A
Pin Diameter	19.05 mm
Hardened Teeth	Without Hardened Teeth
Single Strand Tooth Thickness	18.59 mm
Pitch Diameter	475.4 mm
Bore Style	Minimum Bore
Outside Dia.	495.99 mm
Length Through Bore	18.59 mm
No. of Strands Across	1
Hub Dia.	N/A
No. of Teeth	47
Weight	50.24 LB
EAN or UPC	697950404431